Kim expanding- and contracting tool



L. L. PARKAND w. w.. BYLES. RIMEXPANDING AND CONTRACTING TooL..

APPLICATION FILED JULY 1, 1920.

1,391,526. Patenasept. 2o, 19321.

Fql- .Imm f7 .x-NNNNNNNNNNNNNNNNNNNNNNNNN l .9 /flyE/vTo/QS.`

w/LsoN w. BYLES m LEONORR 1 PARK,

UNITED STATES PATENT erica.

LEONORR L. PARK AND WILSON W. BYLES, OI` ST. LOUIS, MISSOURI.

RIM EXPANDING AND CONTRACTING TOOL.

Specification of Letters Patent. Patented Sept. 20, 1921..

Application filed July 1, 192C. Serial No. 333,414.

To ZZ whom t may concern Be 1t known that we, LnoNoRn L. PARK and VViLsoN W. BYLns, citizens of the United States, residing in the city of St. Louis and State of Missouri, have invented certain new and useful Improvements in Rim Expanding and Contracting Tools, of which the following is a specification.

This invention relates to tools for contracting and expanding split rims which are detachably secured to automobile wheels.

The main object of the invention is to provide a simple and inexpensive tool of this character by the use of which the rim may be easily contracted to'remove and expanded to replace the tire. Y Another object is to provide an improved tool of this character having rim engaging arms equipped withl means to permit them being raised and held out of the way when desired.

Another object is to provide a tool of this character adjustable for use in connection with rims of different sizes.

With these and other objects in view, the

Y invention consists in certain novel features of construction as hereinafter shown and described and then specifically pointed out in the claims.

In the accompanying drawings:

Figure 1 represents a plan view of th tool constituting this invention, shown applied,

Fig. 2 isa side elevation'thereof, with the rim and tire shown in section, being taken on line 2-2 of Fig. 1.

Fig. 3 is a detail sectional view, and

Fig. 4 is a longitudinal detail sectional view of the outer end of one of the arms.

In the embodiment illustrated, the tool constituting this invention comprises a base or stand 1 having an upright frame 2 rising therefrom, said frame being here shown oval in fornrwith the side members 2a thereof provided with registering diametrically opposite apertures 2b in which is loosely mounted for reciprocal movement a threaded rod or shaft 3.

Projecting laterally from one side member 2a of the frame 2 and alining with the aperture 2b therein is a sleeve 4 in which the rod 3 also operates. I

A beveled gear 5 has threaded engagement with the rod 3 between the side members 2a of the frame 2 so that when said gear is rotated the shaft 3 will be reciprocated for a purpose to be described. Another beveled gear 6 is mounted to rotate on stand 1 and meshes with gear 5 being provided with a crank handle 7 for actuating said gears.

Pivotally mounted on the upper and lower faces of the free end of sleeve 4 are two longitudinally extending rim gripping hooks 8 having rearwardly extended heels 9 adapted to engage the sleeve and limit the outward swing of the hooks. These sleevecarried hooks cooperate with similar hooks carried by arms 11 and 12 presently to be described.

An arcuate cross head 10 is arranged edgewise with its concave edge facing the base 1 and is attached midway its ends to the outer end of rod 3 so that the reciprocation ofsaid rod will move the head 10 with it. Pivotally and detachably mounted on the ends of head 10 are the two arms 11 and 12 above referred to, each being provided with a plurality of longitudinally spaced sockets 13 for connection with the ends of head 10 by suitable fasteners, such as bolts 15.

The head 10 has its ends bifurcated, the furcations being adapted to straddle the arms 11 and 12 as shown in Figl, and secured by the bolts 15..

The partition wall at the base ofthe furcations 14 is inclined inwardly from edge to edge of the cross head 10 to permit the arms 11 and 12 to swing laterally on their pivots. (See 1.)

Each arm 11 and 12 carries at its outer end pair of pivoted rim engaging hooks or ingers, arm 11 having the hooks 20 and 20 mounted thereon while similar hooks 21 and 21a are carried by arm 12. Each of these hooks is pivotally mounted intermediate its ends between a pair of outstanding laterally spaced ears 26 and the inner edges `of the rear ends of said hooks beyond their pivots are inclined upwardly and outwardly while their outer edges are preferably rectilinear. The inclined rear edges of these hooks operate to limit the opening movement of the hooks by engagement with the arms carrying the hooks. One hook of each pair, pref erably the upper, has its pintle 23 journaled in longitudinally extending slots 22 formed in the ears 26 between which the hook is mounted to provide for the movement of the hook so that its rear end may be engaged with a shoulder 24 on the arm carrying the hook when said hoolr is moved to the full line position shown in Fig. 4 where it will be out of the way to facilitate the removal and application of the tire. rdinarily the hook mounted in the slotted ears will open to coperate with the other hook of the pair. W hen it is desired to position hook 2O as shown in Fig. 4 it is first moved laterally outward and then swung upward or into position at right angles to the arm on which it is mounted and is moved inwardly until the rear end or heel of said hook engages the shoulder 24 of the arm and is so held until manually released.

in the use of this tool when it is desired to remove a tire from a rim, the tire is placed on a suitable support here shown at and to .vhich the base 1 of the tool has been fiXedly secured. rlhe hooks 8 are then engaged with the rim, as shown in Fig. 1, at a point diametrically opposite the lock in the rim R by means of which it is secured in operative position. The hooked rim engaging or gripping members 20, 202L and 21, 21ZL carried respectively by the arms 11 and 12, are engaged with the rim on opposite sides of its lock so that when the lock is released and the device contracted by rotating the gears through the handle 7, the split ends of the rim will be drawn inwardly in lapping relation thereby releasing the rim from the 'tire T and permitting theI latter to be removed and another to be substituted.

In applying a tire, the tool is engaged with the rim as above described and said rim is held in contracted position until the tire has been placed thereon. The gears 5 and 6 are then rotated in reverse direction to that above described thereby moving the cross head 10 outwardly and spreading arms 11 and 12', the rim engaging heads 18 of which operate to force the rim outwardly into operative position, in which position it is looked thereby securing it to the tire. It is of course understood that the hooks which are mounted in the slotted ears are first swung out wardly to the position shown in full lines in Fig. 4 when the heads 18 are to be used to expand the rim.

To adapt the tool for use in vconnection with rims of different sizes the ends of cross head 10 may be disengaged from the arms 1 and 12 by removing the bolts 15 and then shifting the cross head and connecting it vith one of the other sockets 13 in said arms.

The preferred embodiment of the invention is disclosed in the drawings and set forth in the specification, but it will be understood that any modifications within the scope of the claims may be made in the construction without departing from the principle of the invention or sacrificing any of its advantages.

W e claim:

1. A rim tool comprising a base, an arm extending radially from said base and provided with rim engaging means, said arm being fixed relative to said base, a screw shaft mounted in said base in the same plane as said arm and in alinement therewith, an arcuate head mounted midway its ends on said shaft, two pivoted arms carried by said head and mounted to swing toward and away from each other, and rim gripping fingers pivoted on said pivoted arms to swing in a direction at right angles to that in which said arms swing.

2. A. rim tool comprising a base, a hollow arm extending radially from said base and provided at its free end with rim engaging fingers pivoted thereto, a screw Vthreaded shaft loosely mounted in said base and telescopically engaged with said arm, a beveled gear held against longitudinal movement in said base and having a threaded engagement with said shaft whereby the turning of the gear will operate to move the shaft longitudinally, a driving gear connected with said beveled gear, an arcuate head carried by the outer end of said shaft and provided at its opposite ends with pairs of pivotally mounted rim engaging fingers.

8. A tire tool comprising a base, a fixed arm radiating therefrom and provided at its free end with pivotally mounted rim gripping fingers, a threaded shaft mounted 'for longitudinal adjustment in said base and in the same plane as said arm, an arcuate head mounted intermediate of its ends on the free end of said shaft, arms pivotally mounted on the free ends of said head, and rim gripping fingers carried by thek outer ends of said arms, said fingers being pivoted to swing in a plane at right angles to the plane in which the arms are mounted to swing.

1n testimony whereof, we affix our signatures hereto.

LEONORR L. PARK.

WILSON W. BYLES. 

